I just put in my indiglo's about 3 days ago and I absolutely love those things. The install page that isaac put up was a lifesave but I did notice a couple of things though. Whenevr you try to slide the gauge overlays on by "threading" the needles through the holes I found it was a little difficult so what I done was I sort of bend the overlays in half (note not enough to crease them just bend them) and they went on no problem.
One other thing that I noticed was whenever I tried to run the power from the module to the cig lighter you need to hook it up to the solid green wire behind the cig lighter that is the wire that turns on the led light in your cig lighter but other than that I absolutely love them.
props to isaac and to everyone who put up that install link for the overlays